2-氰乙基N,N-二异丙基氯亚磷酰胺 、
5-(2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl)oxymethyl-5'-O-(4,4'-dimethoxytrityl)-N3-pivaloyloxymethyl-2'-deoxyuridine 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以91%的产率得到5-(2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl)oxymethyl-5'-O-(4,4'-dimethoxytrityl)-N
3-pivaloyloxymethyl-2'-deoxyuridine-3'-O-(2-cyanoethyl-N,N-diisopropyl)phosphoramidite